[blauwbilgorgel]

This is about two years old: http://www.behind-the-enemy-lines.com/2012/04/google-attack-...

I would hope that Google is able to detect abuse of their infrastructure for (D)DOS.

[chr13]

Indeed, I've quoted that article. But it doesn't talk about random parameters which makes it so easy to attack any website not just your own where you know what the urls are.

[nbody]

Nothing mind blowing, same vulnerability really, there are many ways to extend the core issue.